Hyundai Motor Company

Kia Motors Corporation

Seoul National University

Hyunsung Jung

Dae Il Choi

Hyeungwoo Lee

Minyoung Ki

Jeongwoo Lee

Kyoungdoug Min

Myungjun Lee

Jae Hyeok Song

Yo Han Chi

Sanghyun Chu

Seungil Park

Yohan Chi

A variable compression ratio engine includes a piston reciprocally moving in a cylinder of an engine; a variable compression ratio apparatus controlling a movable range of the piston; and a controller controlling the variable compression ratio apparatus if a driving condition of a vehicle and a stability condition of the engine are satisfied to change a compression ratio and controlling a motor torque and an engine torque to control a requirement torque to be satisfied.

Apparatus and method for controlling variable compression ratio engine

An apparatus for controlling a gasoline-diesel complex combustion engine includes an engine generating driving torque by burning gasoline fuel and diesel fuel, a driving information detector for detecting driving information of the engine, and a controller for controlling a diesel injector such that diesel fuel is injected as a single injection or a split injection based on a driving region and a knock intensity included within the driving information.

Apparatus for controlling gasoline-diesel complex combustion engine and method for controlling gasoline-diesel complex combustion engine

A diesel engine piston having a combustion chamber may include a profile surface that protrudes toward a center axis of the combustion chamber from an inner wall thereof and includes a protrusion on the inner wall, the protrusion extending from the inner wall with a predetermined length, wherein the protrusion divides a spray fuel, which may be sprayed and atomized onto the protrusion, into a fuel flow at an upper portion of the combustion chamber and a fuel flow at a lower portion of the combustion chamber, respectively.

Diesel engine piston

A diesel-gasoline dual fuel powered combustion engine system is provided with spark-assisted fouling free EGR system in which gasoline and air are homogeneously combined and supplied to cylinders and then a diesel fuel is injected and combusted together. The system may include: a plurality of cylinders each having a fuel injector; and an exhaust line through which flows an exhaust gas discharged as a fuel from each cylinder is combusted; wherein gasoline fuel combustion type is adapted to one or more cylinder of the plurality of the cylinders, and diesel-gasoline fuel pre-mixed combustion type is adapted to the other cylinders.

Diesel-gasoline dual fuel powered combustion engine system provided with spark-assisted fouling free EGR system

Growing community of inventors

Anyang-si, South Korea

Hyunsung Jung